Physics Optical Experiment Set Multifunction Reflector Refraction Triangular Prism Convex Lens Concave Mirror Dial Linear Light Source Teaching Demonstration Equipment for Teacher Student Education

This is a great way to understand the properties of light going through different lenses and how light beams are bent when going through or reflecting from an interface between different dielectrics.The switchable three-beam parallel light sources are terrific for understanding what is happening.It would be very instructive to buy some 1-inch prisms to also trace out complex light paths with using this light source.

My son really enjoyed it. I wish they included a guidance booklet with in so that in would have been more educational.

Lots of fun to use for our science lesson on light refraction. Combined it with Bill Nye the Science Guy's video on the subject. Used this in small groups and students were engaged and loved it! Used with third grade, but it could be for any grade or age. Recommended!

The lenses were good quality and worked just as described. The investigations/activities that were included were easy to follow and the price was great! The highschoolers were intrigued by the lenses and spent quite some time investigating the differences in each lens and their light path, even after our activities were complete!Plan to perform these activities in a darkened room, for best results. The pictures don’t sufficiently capture how well this worked.One of my students said she was creating art with the light path. Super cute!

Cheaply made.

This is a super educational optics toy, and comes with a decent variety of positive and negative lenses and a mirror tool to illustrate key concepts about reflection, refraction, and focus. You can even demonstrate total internal reflection with the prism, if you aim it just right. It doesn't have a right angle prism, which would have really made this set complete.It comes with decent enough instructions and explanations, but it doesn’t come with batteries (you need 2 AAA). Note that you can adjust the lasers to be perfectly parallel with a small screwdriver, if needed, and you can turn each laser on or off individually. These are a lot of fun to teach with, and really help illustrate ray tracing concepts well.The box has a pattern and scale on it that you can supposedly use. But my box was kind of beat up, and I thought it was easier to just demonstrate on a plain paper. The power level of the lasers is not noted, so I would be careful and treat it as a class III laser, and exercise appropriate safety practices, and teach your kids appropriate safety practices. I’m guessing it’s probably class II, but you just never know, and it’s not labeled. I am going to subtract one star for the lack of any laser label, or safety warning, because this really is important. It has a "small parts choking hazard" and "don't mix old and new batteries" warning, but nothing abouty laser safety.Final Rating: 4 stars! Lost a star for not having laser safety warning -- otherwise an excellent educational toy. It should probably also come with a right angle prism to better illustrate TIR.

This is a nice set to demonstrate the principles of optical refraction, reflection, total internal reflection, etc.One has to move the angle of the laser to the lenses a bit around to get optimum results but in the end it works very well to visualize to students the light path.

If I noticed that lenses are not glass, I would not have purchaced it. Cheaply made and not worth the money.